note 65923 added to ref.math
| From: | nospam!) | Date: | Wed, 10 May 2006 08:15:36 +0000 |
| Subject: | note 65923 added to ref.math | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-111034@lists.php.net to get a copy of this message | ||
I think, this is the optimal code for calculating factorials:
<?php
function fact($int){
if($int<2)return 1;
for($f=2;$int-1>1;$f*=$int--);
return $f;
};
?>
And another one for calculating the $int-th Fibonacci-number:
<?php
function fib($int){
static $fibTable=array();
return empty($fibTable[$int])?$fibTable[$int] =
$int>1?fib($int-2)+fib($int-1):1:$fibTable[$int];
};
?>
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Manual Page -- http://www.php.net/manual/en/ref.math.php
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